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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 216 · 40 questions
TalentJR

Remember (Digit, digit, zeros): black 0 · brown 1 · red 2 · orange 3 · yellow 4 · green 5 · blue 6 · violet 7 · grey 8 · white 9. Band 1 and band 2 = two digits; band 3 = number of zeros to add. Examples: brown-black-red = 1000 Ω; yellow-violet-brown = 470 Ω; red-red-red = 2200 Ω = 2.2 kΩ.

NameDateTime takenScore ___ / 40
  1. 1.🌈 In the resistor colour code, which number does brown stand for?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4200 Ω resistor? (a) red-yellow-red (b) yellow-red-brown (c) yellow-red-orange (d) yellow-red-red
  3. 3.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
  4. 4.🌈 In the resistor colour code, which number does black stand for?
  5. 5.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) the one nearest an end (d) any band
  6. 6.🌈 In the resistor colour code, which number does violet stand for?
  7. 7.🌈 In the resistor colour code, which number does grey stand for?
  8. 8.🌈 A resistor has the colour bands yellow, black, red. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 830 Ω resistor? (a) grey-orange-red (b) grey-orange-brown (c) grey-orange-black (d) orange-grey-brown
  10. 10.🌈 A resistor has the colour bands yellow, violet, red. What is its value (in ohms)?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 67 Ω resistor? (a) blue-violet-brown (b) violet-blue-black (c) violet-violet-black (d) blue-violet-black
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1500 Ω resistor? (a) brown-green-brown (b) brown-green-red (c) green-brown-red (d) brown-green-orange
  13. 13.🌈 A resistor has the colour bands orange, black, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40 Ω resistor? (a) yellow-black-brown (b) green-yellow-black (c) green-black-black (d) yellow-black-black
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 430 Ω resistor? (a) yellow-orange-black (b) yellow-orange-brown (c) orange-yellow-brown (d) yellow-orange-red
  16. 16.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 5 % (d) 25 %
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55 Ω resistor? (a) green-green-brown (b) blue-green-black (c) green-green-black (d) green-blue-black
  18. 18.🌈 A resistor has the colour bands white, white, orange. What is its value (in ohms)?
  19. 19.🌈 In the resistor colour code, which number does green stand for?
  20. 20.🌈 A resistor has the colour bands yellow, green, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands yellow, blue, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands yellow, grey, red. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands white, green, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands white, white, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 In the resistor colour code, which number does red stand for?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 260 Ω resistor? (a) red-blue-brown (b) blue-red-brown (c) red-blue-red (d) red-blue-black
  28. 28.🌈 A resistor has the colour bands violet, black, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands green, red, red. What is its value (in ohms)?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2300 Ω resistor? (a) red-orange-brown (b) red-orange-red (c) orange-red-red (d) red-orange-orange
  31. 31.🌈 A resistor has the colour bands brown, grey, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands green, white, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands brown, orange, black. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 460 Ω resistor? (a) yellow-blue-red (b) yellow-blue-brown (c) blue-yellow-brown (d) yellow-blue-black
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20000 Ω resistor? (a) red-black-red (b) orange-red-orange (c) red-black-yellow (d) red-black-orange
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) violet-grey-black (b) white-violet-black (c) grey-violet-black (d) grey-violet-brown
  37. 37.🌈 A resistor has the colour bands yellow, blue, black. What is its value (in ohms)?
  38. 38.🌈 In the resistor colour code, which number does yellow stand for?
  39. 39.🌈 A resistor has the colour bands green, red, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands grey, green, orange. What is its value (in ohms)?

Answer key

  1. 1
  2. yellow-red-red
  3. 89
  4. 0
  5. the one nearest an end
  6. 7
  7. 8
  8. 4000
  9. grey-orange-brown
  10. 4700
  11. blue-violet-black
  12. brown-green-red
  13. 30
  14. yellow-black-black
  15. yellow-orange-brown
  16. 5 %
  17. green-green-black
  18. 99000
  19. 5
  20. 4.5
  21. 460
  22. 4800
  23. 95
  24. 990
  25. 760
  26. 2
  27. red-blue-brown
  28. 700
  29. 5200
  30. red-orange-red
  31. 1800
  32. 59
  33. 13
  34. yellow-blue-brown
  35. red-black-orange
  36. grey-violet-black
  37. 46
  38. 4
  39. 520
  40. 85000

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